mirror of
https://github.com/MidnightCommander/mc
synced 2025-01-03 18:14:25 +03:00
* man2hlp.c (main): Use only stream I/O. Fix checks for error
conditions. Reformat the whole file.
This commit is contained in:
Pavel Roskin
parent
56a685c3e6
commit
80561f39a7
@ -1,5 +1,8 @@
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2002-07-30 Pavel Roskin <proski@gnu.org>
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* man2hlp.c (main): Use only stream I/O. Fix checks for error
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conditions. Reformat the whole file.
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* man2hlp.c: Avoid the need to use gindex.pl.
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From Andrew V. Samoilov <sav@bcs.zp.ua>
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* Makefile.am: Use man2hlp directly.
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365
src/man2hlp.c
365
src/man2hlp.c
@ -21,11 +21,6 @@
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#include <stdarg.h>
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#include <string.h>
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#include <fcntl.h> /* O_RDONLY, O_WRONLY */
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#ifdef HAVE_UNISTD_H
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# include <unistd.h>
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#endif
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#include "help.h"
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#define BUFFER_SIZE 256
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@ -54,21 +49,25 @@ static struct node {
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} nodes, *cnode;
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/* Report error in input */
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static void print_error (char *message)
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static void
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print_error (char *message)
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{
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fprintf (stderr, "man2hlp: %s in file \"%s\" at row %d\n", message, filename, in_row);
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fprintf (stderr, "man2hlp: %s in file \"%s\" at row %d\n", message,
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filename, in_row);
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}
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/* Change output line */
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static void newline (void)
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static void
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newline (void)
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{
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out_row ++;
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out_row++;
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col = 0;
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printf("\n");
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printf ("\n");
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}
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/* Calculate the length of string */
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static int string_len (char *buffer)
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static int
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string_len (char *buffer)
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{
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static int anchor_flag = 0; /* Flag: Inside hypertext anchor name */
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static int link_flag = 0; /* Flag: Inside hypertext link target name */
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@ -76,32 +75,31 @@ static int string_len (char *buffer)
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int c; /* Current character */
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int len = 0; /* Result: the length of the string */
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while (*(buffer))
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{
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while (*(buffer)) {
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c = *buffer++;
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if (c == CHAR_LINK_POINTER)
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if (c == CHAR_LINK_POINTER)
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link_flag = 1; /* Link target name starts */
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else if (c == CHAR_LINK_END)
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link_flag = 0; /* Link target name ends */
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else if (c == CHAR_NODE_END){
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else if (c == CHAR_NODE_END) {
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/* Node anchor name starts */
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anchor_flag = 1;
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/* Ugly hack to prevent loss of one space */
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len ++;
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len++;
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}
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/* Don't add control characters to the length */
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if (c >= 0 && c < 32)
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continue;
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/* Attempt to handle backslash quoting */
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if (c == '\\' && !backslash_flag){
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if (c == '\\' && !backslash_flag) {
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backslash_flag = 1;
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continue;
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}
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backslash_flag = 0;
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/* Increase length if not inside anchor name or link target name */
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if (!anchor_flag && !link_flag)
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len ++;
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if (anchor_flag && c == ']'){
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len++;
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if (anchor_flag && c == ']') {
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/* Node anchor name ends */
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anchor_flag = 0;
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}
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@ -110,21 +108,22 @@ static int string_len (char *buffer)
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}
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/* Output the string */
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static void print_string (char *buffer)
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static void
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print_string (char *buffer)
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{
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int len; /* The length of current word */
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int c; /* Current character */
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int len; /* The length of current word */
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int c; /* Current character */
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int backslash_flag = 0;
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/* Skipping lines? */
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if (skip_flag)
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return;
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/* Copying verbatim? */
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if (verbatim_flag){
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if (verbatim_flag) {
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/* Attempt to handle backslash quoting */
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while (*(buffer)){
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while (*(buffer)) {
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c = *buffer++;
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if (c == '\\' && !backslash_flag){
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if (c == '\\' && !backslash_flag) {
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backslash_flag = 1;
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continue;
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}
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@ -135,23 +134,22 @@ static void print_string (char *buffer)
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/* Split into words */
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buffer = strtok (buffer, " \t\n");
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/* Repeat for each word */
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while (buffer){
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/* Skip empty strings */
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if (*(buffer)){
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while (buffer) {
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/* Skip empty strings */
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if (*(buffer)) {
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len = string_len (buffer);
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/* Change the line if about to break the right margin */
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if (col + len >= width)
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newline ();
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/* Words are separated by spaces */
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if (col > 0){
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if (col > 0) {
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printf (" ");
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col ++;
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col++;
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}
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/* Attempt to handle backslash quoting */
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while (*(buffer))
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{
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while (*(buffer)) {
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c = *buffer++;
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if (c == '\\' && !backslash_flag){
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if (c == '\\' && !backslash_flag) {
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backslash_flag = 1;
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continue;
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}
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@ -163,15 +161,16 @@ static void print_string (char *buffer)
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}
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/* Get the next word */
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buffer = strtok (NULL, " \t\n");
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} /* while */
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} /* while */
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}
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}
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/* Like print_string but with printf-like syntax */
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static void printf_string (char *format, ...)
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static void
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printf_string (char *format, ...)
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{
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va_list args;
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char buffer [BUFFER_SIZE];
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char buffer[BUFFER_SIZE];
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va_start (args, format);
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vsprintf (buffer, format, args);
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@ -180,113 +179,111 @@ static void printf_string (char *format, ...)
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}
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/* Handle all the roff dot commands */
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static void handle_command (char *buffer)
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static void
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handle_command (char *buffer)
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{
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int len, heading_level;
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/* Get the command name */
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strtok (buffer, " \t");
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if ((strcmp (buffer, ".SH") == 0) || (strcmp (buffer, ".\\\"NODE") == 0)){
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if ((strcmp (buffer, ".SH") == 0)
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|| (strcmp (buffer, ".\\\"NODE") == 0)) {
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int SH = (strcmp (buffer, ".SH") == 0);
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/* If we already skipped a section, don't skip another */
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if (skip_flag == 2){
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if (skip_flag == 2) {
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skip_flag = 0;
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}
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/* Get the command parameters */
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buffer = strtok (NULL, "");
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if (buffer == NULL){
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if (buffer == NULL) {
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print_error ("Syntax error: .SH: no title");
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return;
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} else {
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/* Remove quotes */
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if (buffer[0] == '"'){
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buffer ++;
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if (buffer[0] == '"') {
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buffer++;
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len = strlen (buffer);
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if (buffer[len-1] == '"'){
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len --;
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if (buffer[len - 1] == '"') {
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len--;
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buffer[len] = 0;
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}
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}
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/* Calculate heading level */
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heading_level = 0;
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while (buffer [heading_level] == ' ')
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heading_level ++;
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while (buffer[heading_level] == ' ')
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heading_level++;
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/* Heading level must be even */
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if (heading_level & 1)
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print_error ("Syntax error: .SH: odd heading level");
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if (no_split_flag){
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if (no_split_flag) {
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/* Don't start a new section */
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newline ();
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print_string (buffer);
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newline ();
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newline ();
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no_split_flag = 0;
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}
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else if (skip_flag){
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} else if (skip_flag) {
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/* Skipping title and marking text for skipping */
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skip_flag = 2;
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}
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else {
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if (!SH || !node){
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/* Start a new section */
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if (!output)
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printf ("%c[%s]", CHAR_NODE_END, buffer);
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else {
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printf ("%c[%s]", CHAR_NODE_END, buffer + heading_level);
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if (!cnode){
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cnode = &nodes;
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cnode->next = NULL;
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} else {
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cnode->next = malloc (sizeof (nodes));
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cnode = cnode->next;
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} else {
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if (!SH || !node) {
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/* Start a new section */
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if (!output)
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printf ("%c[%s]", CHAR_NODE_END, buffer);
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else {
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printf ("%c[%s]", CHAR_NODE_END,
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buffer + heading_level);
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if (!cnode) {
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cnode = &nodes;
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cnode->next = NULL;
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} else {
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cnode->next = malloc (sizeof (nodes));
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cnode = cnode->next;
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}
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cnode->node = strdup (buffer);
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cnode->lname = NULL;
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}
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cnode->node = strdup (buffer);
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cnode->lname = NULL;
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}
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col ++;
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col++;
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newline ();
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}
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if (SH){
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if (SH) {
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if (output)
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/* print_string() strtok()es buffer, so */
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/* print_string() strtok()es buffer, so */
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cnode->lname = strdup (buffer + heading_level);
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print_string (buffer + heading_level);
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newline ();
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newline ();
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}
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} /* Start new section */
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} /* Has parameters */
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} /* Start new section */
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} /* Has parameters */
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node = !SH;
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} /* Command .SH */
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else if (strcmp (buffer, ".\\\"DONT_SPLIT\"") == 0){
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else if (strcmp (buffer, ".\\\"DONT_SPLIT\"") == 0) {
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no_split_flag = 1;
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}
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else if (strcmp (buffer, ".\\\"SKIP_SECTION\"") == 0){
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} else if (strcmp (buffer, ".\\\"SKIP_SECTION\"") == 0) {
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skip_flag = 1;
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}
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else if (strcmp (buffer, ".\\\"LINK2\"") == 0){
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} else if (strcmp (buffer, ".\\\"LINK2\"") == 0) {
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/* Next two input lines form a link */
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link_flag = 2;
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}
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else if (strcmp (buffer, ".PP") == 0){
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} else if (strcmp (buffer, ".PP") == 0) {
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/* End of paragraph */
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if (col > 0) newline();
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if (col > 0)
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newline ();
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newline ();
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}
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else if (strcmp (buffer, ".nf") == 0){
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} else if (strcmp (buffer, ".nf") == 0) {
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/* Following input lines are to be handled verbatim */
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verbatim_flag = 1;
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if (col > 0) newline ();
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}
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else if (strcmp (buffer, ".I") == 0 || strcmp (buffer, ".B") == 0){
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if (col > 0)
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newline ();
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} else if (strcmp (buffer, ".I") == 0 || strcmp (buffer, ".B") == 0) {
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/* Bold text or italics text */
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char type = buffer [1];
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char type = buffer[1];
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char *p;
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char *w = buffer;
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char *w = buffer;
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int backslash_flag = 0;
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buffer = strtok (NULL, "");
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if (buffer == NULL){
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if (buffer == NULL) {
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print_error ("Syntax error: .I / .B: no text");
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return;
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}
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@ -294,8 +291,8 @@ static void handle_command (char *buffer)
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*w = (type == 'I') ? CHAR_ITALIC_ON : CHAR_BOLD_ON;
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/* Attempt to handle backslash quoting */
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for (p = buffer, buffer = w++; *p; p++){
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if (*p == '\\' && !backslash_flag){
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for (p = buffer, buffer = w++; *p; p++) {
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if (*p == '\\' && !backslash_flag) {
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backslash_flag = 1;
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continue;
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}
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@ -306,19 +303,19 @@ static void handle_command (char *buffer)
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*w++ = CHAR_BOLD_OFF;
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*w = 0;
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print_string (buffer);
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}
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else if (strcmp (buffer, ".TP") == 0){
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} else if (strcmp (buffer, ".TP") == 0) {
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/* End of paragraph? */
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if (col > 0) newline ();
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if (col > 0)
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newline ();
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newline ();
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}
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else if (strcmp (buffer, ".\\\"TOPICS") == 0){
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if (out_row > 1){
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print_error ("Syntax error: .\\\"TOPICS must be first command");
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} else if (strcmp (buffer, ".\\\"TOPICS") == 0) {
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if (out_row > 1) {
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print_error
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("Syntax error: .\\\"TOPICS must be first command");
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return;
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}
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buffer = strtok (NULL, "");
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if (buffer == NULL){
|
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if (buffer == NULL) {
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print_error ("Syntax error: .\\\"TOPICS: no text");
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return;
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}
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@ -326,62 +323,64 @@ static void handle_command (char *buffer)
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Topics = strdup (buffer);
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else
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printf ("%s\n", buffer);
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}
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else {
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} else {
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/* Other commands are ignored */
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}
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}
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static void handle_link (char *buffer)
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static void
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handle_link (char *buffer)
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{
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static char old [80];
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static char old[80];
|
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int len;
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switch (link_flag){
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switch (link_flag) {
|
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case 1:
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/* Old format link, not supported */
|
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break;
|
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case 2:
|
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/* First part of new format link */
|
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/* Bold text or italics text */
|
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if (buffer [0] == '.' && (buffer [1] == 'I' || buffer [1] == 'B'))
|
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for (buffer += 2; *buffer == ' ' || *buffer == '\t'; buffer++)
|
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;
|
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if (buffer[0] == '.' && (buffer[1] == 'I' || buffer[1] == 'B'))
|
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for (buffer += 2; *buffer == ' ' || *buffer == '\t'; buffer++);
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strcpy (old, buffer);
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link_flag = 3;
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break;
|
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case 3:
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/* Second part of new format link */
|
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if (buffer [0] == '.')
|
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if (buffer[0] == '.')
|
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buffer++;
|
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if (buffer [0] == '\\')
|
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if (buffer[0] == '\\')
|
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buffer++;
|
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if (buffer [0] == '"')
|
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if (buffer[0] == '"')
|
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buffer++;
|
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len = strlen (buffer);
|
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if (len && buffer [len-1] == '"'){
|
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buffer [--len] = 0;
|
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if (len && buffer[len - 1] == '"') {
|
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buffer[--len] = 0;
|
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}
|
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printf_string ("%c%s%c%s%c\n", CHAR_LINK_START, old, CHAR_LINK_POINTER, buffer, CHAR_LINK_END);
|
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printf_string ("%c%s%c%s%c\n", CHAR_LINK_START, old,
|
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CHAR_LINK_POINTER, buffer, CHAR_LINK_END);
|
||||
link_flag = 0;
|
||||
break;
|
||||
}
|
||||
}
|
||||
|
||||
int main (int argc, char **argv)
|
||||
int
|
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main (int argc, char **argv)
|
||||
{
|
||||
int len; /* Length of input line */
|
||||
FILE *file; /* Input file */
|
||||
char buffer2 [BUFFER_SIZE]; /* Temp input line */
|
||||
FILE *fout; /* Output file */
|
||||
char buffer2[BUFFER_SIZE]; /* Temp input line */
|
||||
char *buffer = buffer2; /* Input line */
|
||||
char *node = NULL;
|
||||
|
||||
int file_fd;
|
||||
long contents_beginning, file_end;
|
||||
long cont_start, file_end;
|
||||
|
||||
/* Validity check for arguments */
|
||||
if ((argc != 3 && argc != 5) || ((width = atoi (argv[1])) <= 10)){
|
||||
fprintf (stderr, "Usage: man2hlp <width> <file.man> [template_file helpfile]\n");
|
||||
if ((argc != 3 && argc != 5) || ((width = atoi (argv[1])) <= 10)) {
|
||||
fprintf (stderr,
|
||||
"Usage: man2hlp <width> <file.man> [template_file helpfile]\n");
|
||||
return 3;
|
||||
}
|
||||
|
||||
@ -391,53 +390,50 @@ int main (int argc, char **argv)
|
||||
/* Open the input file */
|
||||
filename = argv[2];
|
||||
file = fopen (filename, "r");
|
||||
if (file == NULL){
|
||||
if (file == NULL) {
|
||||
sprintf (buffer, "man2hlp: Cannot open file \"%s\"", filename);
|
||||
perror (buffer);
|
||||
return 3;
|
||||
}
|
||||
|
||||
if (argc == 5 && freopen (argv [4], "w", stdout) == NULL){
|
||||
if (argc == 5 && freopen (argv[4], "w", stdout) == NULL) {
|
||||
sprintf (buffer, "man2hlp: Cannot open file \"%s\"", argv[4]);
|
||||
perror (buffer);
|
||||
return 3;
|
||||
}
|
||||
|
||||
/* Repeat for each input line */
|
||||
while (!feof (file)){
|
||||
while (!feof (file)) {
|
||||
/* Read a line */
|
||||
if (!fgets (buffer2, BUFFER_SIZE, file)){
|
||||
if (!fgets (buffer2, BUFFER_SIZE, file)) {
|
||||
break;
|
||||
}
|
||||
if (buffer2 [0] == '\\' && buffer2 [1] == '&')
|
||||
if (buffer2[0] == '\\' && buffer2[1] == '&')
|
||||
buffer = buffer2 + 2;
|
||||
else
|
||||
buffer = buffer2;
|
||||
in_row ++;
|
||||
in_row++;
|
||||
len = strlen (buffer);
|
||||
/* Remove terminating newline */
|
||||
if (buffer [len-1] == '\n')
|
||||
{
|
||||
len --;
|
||||
buffer [len] = 0;
|
||||
if (buffer[len - 1] == '\n') {
|
||||
len--;
|
||||
buffer[len] = 0;
|
||||
}
|
||||
if (verbatim_flag){
|
||||
if (verbatim_flag) {
|
||||
/* Copy the line verbatim */
|
||||
if (strcmp (buffer, ".fi") == 0){
|
||||
if (strcmp (buffer, ".fi") == 0) {
|
||||
verbatim_flag = 0;
|
||||
} else {
|
||||
print_string (buffer);
|
||||
newline ();
|
||||
}
|
||||
}
|
||||
else if (link_flag)
|
||||
} else if (link_flag)
|
||||
/* The line is a link */
|
||||
handle_link (buffer);
|
||||
else if (buffer[0] == '.')
|
||||
/* The line is a roff command */
|
||||
handle_command (buffer);
|
||||
else
|
||||
{
|
||||
else {
|
||||
/* A normal line, just output it */
|
||||
print_string (buffer);
|
||||
}
|
||||
@ -453,19 +449,19 @@ int main (int argc, char **argv)
|
||||
/* Open the template file */
|
||||
filename = argv[3];
|
||||
file = fopen (filename, "r");
|
||||
if (file == NULL){
|
||||
if (file == NULL) {
|
||||
sprintf (buffer, "man2hlp: Cannot open file \"%s\"", filename);
|
||||
perror (buffer);
|
||||
return 3;
|
||||
}
|
||||
/* Repeat for each input line */
|
||||
while (!feof (file)){
|
||||
while (!feof (file)) {
|
||||
/* Read a line */
|
||||
if (!fgets (buffer2, BUFFER_SIZE, file)){
|
||||
if (!fgets (buffer2, BUFFER_SIZE, file)) {
|
||||
break;
|
||||
}
|
||||
if (node){
|
||||
if (*buffer2 && *buffer2 != '\n'){
|
||||
if (node) {
|
||||
if (*buffer2 && *buffer2 != '\n') {
|
||||
cnode->lname = strdup (buffer2);
|
||||
node = strchr (cnode->lname, '\n');
|
||||
if (node)
|
||||
@ -473,43 +469,43 @@ int main (int argc, char **argv)
|
||||
}
|
||||
node = NULL;
|
||||
} else {
|
||||
node = strchr (buffer, CHAR_NODE_END);
|
||||
if (node && (node[1] == '[')){
|
||||
char *p = strrchr (node, ']');
|
||||
if (p && strncmp (node+2, "main", 4) == 0 && node[6] == ']') {
|
||||
node = 0;
|
||||
} else {
|
||||
if (!cnode){
|
||||
cnode = &nodes;
|
||||
cnode->next = NULL;
|
||||
node = strchr (buffer, CHAR_NODE_END);
|
||||
if (node && (node[1] == '[')) {
|
||||
char *p = strrchr (node, ']');
|
||||
if (p && strncmp (node + 2, "main", 4) == 0
|
||||
&& node[6] == ']') {
|
||||
node = 0;
|
||||
} else {
|
||||
cnode->next = malloc (sizeof (nodes));
|
||||
cnode = cnode->next;
|
||||
if (!cnode) {
|
||||
cnode = &nodes;
|
||||
cnode->next = NULL;
|
||||
} else {
|
||||
cnode->next = malloc (sizeof (nodes));
|
||||
cnode = cnode->next;
|
||||
}
|
||||
cnode->node = strdup (node + 2);
|
||||
cnode->node[p - node - 2] = 0;
|
||||
cnode->lname = NULL;
|
||||
}
|
||||
cnode->node = strdup (node + 2);
|
||||
cnode->node [p - node - 2] = 0;
|
||||
cnode->lname = NULL;
|
||||
}
|
||||
} else
|
||||
node = NULL;
|
||||
} else
|
||||
node = NULL;
|
||||
}
|
||||
fputs (buffer, stdout);
|
||||
}
|
||||
|
||||
contents_beginning = ftell (stdout);
|
||||
cont_start = ftell (stdout);
|
||||
printf ("\004[Contents]\n%s\n\n", Topics);
|
||||
|
||||
for (cnode = &nodes; cnode && cnode->node; cnode = cnode->next){
|
||||
for (cnode = &nodes; cnode && cnode->node; cnode = cnode->next) {
|
||||
char *node = cnode->node;
|
||||
int heading_level = 0;
|
||||
while (*node == ' '){
|
||||
while (*node == ' ') {
|
||||
heading_level++;
|
||||
node++;
|
||||
}
|
||||
if (*node)
|
||||
printf (" %*s\001 %s \002%s\003", heading_level, "",
|
||||
cnode->lname ? cnode->lname : node,
|
||||
node);
|
||||
printf (" %*s\001 %s \002%s\003", heading_level, "",
|
||||
cnode->lname ? cnode->lname : node, node);
|
||||
printf ("\n");
|
||||
|
||||
free (cnode->node);
|
||||
@ -523,17 +519,48 @@ int main (int argc, char **argv)
|
||||
fclose (file);
|
||||
|
||||
Topics = malloc (file_end);
|
||||
file_fd = open (output, O_RDONLY);
|
||||
if (file_fd == -1)
|
||||
if (!Topics)
|
||||
return 1;
|
||||
|
||||
fout = fopen (output, "r");
|
||||
if (!fout) {
|
||||
perror (output);
|
||||
if (read (file_fd, Topics, file_end) != file_end)
|
||||
return 1;
|
||||
}
|
||||
|
||||
if (fread (Topics, 1, file_end, fout) != file_end) {
|
||||
perror (output);
|
||||
if (close (file_fd) == -1)
|
||||
return 1;
|
||||
}
|
||||
|
||||
if (fclose (fout) != 0) {
|
||||
perror (output);
|
||||
file_fd = open (output, O_WRONLY);
|
||||
write (file_fd, Topics + contents_beginning, file_end - contents_beginning);
|
||||
write (file_fd, Topics, contents_beginning);
|
||||
close (file_fd);
|
||||
return 1;
|
||||
}
|
||||
|
||||
fout = fopen (output, "w");
|
||||
if (!fout) {
|
||||
perror (output);
|
||||
return 1;
|
||||
}
|
||||
|
||||
if (fwrite (Topics + cont_start, 1, file_end - cont_start, fout) !=
|
||||
file_end - cont_start) {
|
||||
perror (output);
|
||||
return 1;
|
||||
}
|
||||
|
||||
if (fwrite (Topics, 1, cont_start, fout) != cont_start) {
|
||||
perror (output);
|
||||
return 1;
|
||||
}
|
||||
|
||||
free (Topics);
|
||||
|
||||
if (fclose (fout) != 0) {
|
||||
perror (output);
|
||||
return 1;
|
||||
}
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
Loading…
Reference in New Issue
Block a user